Have lower pelvic and back pain, heartburn, tender breasts and dizziness. Had tubal clips applied. Reason?

I am 36 and had tubal clips applied in 2000. I am currently experiencing lower pelvic and lower back pain. I am getting heartburn after everything I eat, accompanied by gas. I have tender breasts and bouts of dizziness on occasion. I'm not considering pregnancy as a cause, I'm looking for other causes for my symptoms. What types of things should I be concerned about?